From: Ben Hutchings <ben@decadent.org.uk>
Date: Tue, 10 Feb 2015 00:05:18 +0000 (+0000)
Subject: Revert "tcp: Apply device TSO segment limit earlier"
X-Git-Tag: v3.2.67~75
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=649917478f4c580f6c0a46c99ebff7381581530b;p=pandora-kernel.git

Revert "tcp: Apply device TSO segment limit earlier"

This reverts commit 9f871e883277cc22c6217db806376dce52401a31, which
was commit 1485348d2424e1131ea42efc033cbd9366462b01 upstream.

It can cause connections to stall when a PMTU event occurs.  This was
fixed by commit 843925f33fcc ("tcp: Do not apply TSO segment limit to
non-TSO packets") upstream, but that depends on other changes to TSO.

The original issue this fixed was a performance regression for the sfc
driver in extreme cases of TSO (skb with > 100 segments).  This is not
really very important and it seems best to revert it rather than try
to fix it up.

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: netdev@vger.kernel.org
Cc: linux-net-drivers@solarflare.com
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